On 10/5/2010 6:37 PM, Kishon Vijay Abraham I wrote:
Signed-off-by: Kishon Vijay Abraham I<kishon@xxxxxx>
Signed-off-by: Charulatha V<charu@xxxxxx>
Signed-off-by: Shubhrajyoti D<shubhrajyoti@xxxxxx>
Cc: Partha Basak<p-basak2@xxxxxx>
---
arch/arm/mach-omap2/mcbsp.c | 251 +++++++++----------------------
arch/arm/plat-omap/include/plat/mcbsp.h | 6 +-
arch/arm/plat-omap/mcbsp.c | 189 +++++++++++-------------
3 files changed, 159 insertions(+), 287 deletions(-)
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c
index eba9fa1..25c6703 100644
--- a/arch/arm/mach-omap2/mcbsp.c
+++ b/arch/arm/mach-omap2/mcbsp.c
@@ -22,9 +22,13 @@
#include<plat/dma.h>
#include<plat/cpu.h>
#include<plat/mcbsp.h>
+#include<plat/omap_hwmod.h>
+#include<plat/omap_device.h>
#include "control.h"
+static struct omap_hwmod *oh_st_device[] = {NULL, NULL};
+static int no_of_st;
/* McBSP internal signal muxing functions */
@@ -101,199 +105,90 @@ int omap2_mcbsp_set_clks_src(u8 id, u8 fck_src_id)
}
EXPORT_SYMBOL(omap2_mcbsp_set_clks_src);
-
-/* Platform data */
-
-#ifdef CONFIG_ARCH_OMAP2420
-static struct omap_mcbsp_platform_data omap2420_mcbsp_pdata[] = {
- {
- .phys_base = OMAP24XX_MCBSP1_BASE,
- .dma_rx_sync = OMAP24XX_DMA_MCBSP1_RX,
- .dma_tx_sync = OMAP24XX_DMA_MCBSP1_TX,
- .rx_irq = INT_24XX_MCBSP1_IRQ_RX,
- .tx_irq = INT_24XX_MCBSP1_IRQ_TX,
- },
+struct omap_device_pm_latency omap2_mcbsp_latency[] = {
{
- .phys_base = OMAP24XX_MCBSP2_BASE,
- .dma_rx_sync = OMAP24XX_DMA_MCBSP2_RX,
- .dma_tx_sync = OMAP24XX_DMA_MCBSP2_TX,
- .rx_irq = INT_24XX_MCBSP2_IRQ_RX,
- .tx_irq = INT_24XX_MCBSP2_IRQ_TX,
+ .deactivate_func = omap_device_idle_hwmods,
+ .activate_func = omap_device_enable_hwmods,
+ .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
},
};
-#define OMAP2420_MCBSP_PDATA_SZ ARRAY_SIZE(omap2420_mcbsp_pdata)
-#define OMAP2420_MCBSP_REG_NUM (OMAP_MCBSP_REG_RCCR / sizeof(u32) + 1)
-#else
-#define omap2420_mcbsp_pdata NULL
-#define OMAP2420_MCBSP_PDATA_SZ 0
-#define OMAP2420_MCBSP_REG_NUM 0
-#endif
-#ifdef CONFIG_ARCH_OMAP2430
-static struct omap_mcbsp_platform_data omap2430_mcbsp_pdata[] = {
- {
- .phys_base = OMAP24XX_MCBSP1_BASE,
- .dma_rx_sync = OMAP24XX_DMA_MCBSP1_RX,
- .dma_tx_sync = OMAP24XX_DMA_MCBSP1_TX,
- .rx_irq = INT_24XX_MCBSP1_IRQ_RX,
- .tx_irq = INT_24XX_MCBSP1_IRQ_TX,
- },
- {
- .phys_base = OMAP24XX_MCBSP2_BASE,
- .dma_rx_sync = OMAP24XX_DMA_MCBSP2_RX,
- .dma_tx_sync = OMAP24XX_DMA_MCBSP2_TX,
- .rx_irq = INT_24XX_MCBSP2_IRQ_RX,
- .tx_irq = INT_24XX_MCBSP2_IRQ_TX,
- },
- {
- .phys_base = OMAP2430_MCBSP3_BASE,
- .dma_rx_sync = OMAP24XX_DMA_MCBSP3_RX,
- .dma_tx_sync = OMAP24XX_DMA_MCBSP3_TX,
- .rx_irq = INT_24XX_MCBSP3_IRQ_RX,
- .tx_irq = INT_24XX_MCBSP3_IRQ_TX,
- },
- {
- .phys_base = OMAP2430_MCBSP4_BASE,
- .dma_rx_sync = OMAP24XX_DMA_MCBSP4_RX,
- .dma_tx_sync = OMAP24XX_DMA_MCBSP4_TX,
- .rx_irq = INT_24XX_MCBSP4_IRQ_RX,
- .tx_irq = INT_24XX_MCBSP4_IRQ_TX,
- },
- {
- .phys_base = OMAP2430_MCBSP5_BASE,
- .dma_rx_sync = OMAP24XX_DMA_MCBSP5_RX,
- .dma_tx_sync = OMAP24XX_DMA_MCBSP5_TX,
- .rx_irq = INT_24XX_MCBSP5_IRQ_RX,
- .tx_irq = INT_24XX_MCBSP5_IRQ_TX,
- },
-};
-#define OMAP2430_MCBSP_PDATA_SZ ARRAY_SIZE(omap2430_mcbsp_pdata)
-#define OMAP2430_MCBSP_REG_NUM (OMAP_MCBSP_REG_RCCR / sizeof(u32) + 1)
-#else
-#define omap2430_mcbsp_pdata NULL
-#define OMAP2430_MCBSP_PDATA_SZ 0
-#define OMAP2430_MCBSP_REG_NUM 0
-#endif
+static int omap_init_mcbsp(struct omap_hwmod *oh, void *user)
+{
+ int id, count = 1, i;
+ char *name = "omap-mcbsp";
+ char dev_name[16];
+ struct omap_hwmod *oh_device[2];
+ struct omap_mcbsp_platform_data *pdata;
+ struct omap_device *od;
+
+ if (!oh) {
+ pr_err("%s:NULL hwmod pointer (oh)\n", __func__);
+ return -EINVAL;
+ }
-#ifdef CONFIG_ARCH_OMAP3
-static struct omap_mcbsp_platform_data omap34xx_mcbsp_pdata[] = {
- {
- .phys_base = OMAP34XX_MCBSP1_BASE,
- .dma_rx_sync = OMAP24XX_DMA_MCBSP1_RX,
- .dma_tx_sync = OMAP24XX_DMA_MCBSP1_TX,
- .rx_irq = INT_24XX_MCBSP1_IRQ_RX,
- .tx_irq = INT_24XX_MCBSP1_IRQ_TX,
- .buffer_size = 0x80, /* The FIFO has 128 locations */
- },
- {
- .phys_base = OMAP34XX_MCBSP2_BASE,
- .phys_base_st = OMAP34XX_MCBSP2_ST_BASE,
- .dma_rx_sync = OMAP24XX_DMA_MCBSP2_RX,
- .dma_tx_sync = OMAP24XX_DMA_MCBSP2_TX,
- .rx_irq = INT_24XX_MCBSP2_IRQ_RX,
- .tx_irq = INT_24XX_MCBSP2_IRQ_TX,
- .buffer_size = 0x500, /* The FIFO has 1024 + 256 locations */
- },
- {
- .phys_base = OMAP34XX_MCBSP3_BASE,
- .phys_base_st = OMAP34XX_MCBSP3_ST_BASE,
- .dma_rx_sync = OMAP24XX_DMA_MCBSP3_RX,
- .dma_tx_sync = OMAP24XX_DMA_MCBSP3_TX,
- .rx_irq = INT_24XX_MCBSP3_IRQ_RX,
- .tx_irq = INT_24XX_MCBSP3_IRQ_TX,
- .buffer_size = 0x80, /* The FIFO has 128 locations */
- },
- {
- .phys_base = OMAP34XX_MCBSP4_BASE,
- .dma_rx_sync = OMAP24XX_DMA_MCBSP4_RX,
- .dma_tx_sync = OMAP24XX_DMA_MCBSP4_TX,
- .rx_irq = INT_24XX_MCBSP4_IRQ_RX,
- .tx_irq = INT_24XX_MCBSP4_IRQ_TX,
- .buffer_size = 0x80, /* The FIFO has 128 locations */
- },
- {
- .phys_base = OMAP34XX_MCBSP5_BASE,
- .dma_rx_sync = OMAP24XX_DMA_MCBSP5_RX,
- .dma_tx_sync = OMAP24XX_DMA_MCBSP5_TX,
- .rx_irq = INT_24XX_MCBSP5_IRQ_RX,
- .tx_irq = INT_24XX_MCBSP5_IRQ_TX,
- .buffer_size = 0x80, /* The FIFO has 128 locations */
- },
-};
-#define OMAP34XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap34xx_mcbsp_pdata)
-#define OMAP34XX_MCBSP_REG_NUM (OMAP_MCBSP_REG_RCCR / sizeof(u32) + 1)
-#else
-#define omap34xx_mcbsp_pdata NULL
-#define OMAP34XX_MCBSP_PDATA_SZ 0
-#define OMAP34XX_MCBSP_REG_NUM 0
-#endif
+ pdata = kzalloc(sizeof(struct omap_mcbsp_platform_data), GFP_KERNEL);
+ if (!pdata) {
+ pr_err("%s: No memory for mcbsp\n", __func__);
+ return -ENOMEM;
+ }
-static struct omap_mcbsp_platform_data omap44xx_mcbsp_pdata[] = {
- {
- .phys_base = OMAP44XX_MCBSP1_BASE,
- .dma_rx_sync = OMAP44XX_DMA_MCBSP1_RX,
- .dma_tx_sync = OMAP44XX_DMA_MCBSP1_TX,
- .tx_irq = OMAP44XX_IRQ_MCBSP1,
- },
- {
- .phys_base = OMAP44XX_MCBSP2_BASE,
- .dma_rx_sync = OMAP44XX_DMA_MCBSP2_RX,
- .dma_tx_sync = OMAP44XX_DMA_MCBSP2_TX,
- .tx_irq = OMAP44XX_IRQ_MCBSP2,
- /* XXX .ops ? */
- },
- {
- .phys_base = OMAP44XX_MCBSP3_BASE,
- .dma_rx_sync = OMAP44XX_DMA_MCBSP3_RX,
- .dma_tx_sync = OMAP44XX_DMA_MCBSP3_TX,
- .tx_irq = OMAP44XX_IRQ_MCBSP3,
- /* XXX .ops ? */
- },
- {
- .phys_base = OMAP44XX_MCBSP4_BASE,
- .dma_rx_sync = OMAP44XX_DMA_MCBSP4_RX,
- .dma_tx_sync = OMAP44XX_DMA_MCBSP4_TX,
- .tx_irq = OMAP44XX_IRQ_MCBSP4,
- /* XXX .ops ? */
- },
-};
-#define OMAP44XX_MCBSP_PDATA_SZ ARRAY_SIZE(omap44xx_mcbsp_pdata)
-#define OMAP44XX_MCBSP_REG_NUM (OMAP_MCBSP_REG_RCCR / sizeof(u32) + 1)
+ if (cpu_is_omap34xx()) {
+ pdata->dma_op_mode = MCBSP_DMA_MODE_ELEMENT;
+ if (id == 2)
+ pdata->buffer_size = 0x500;
+ else
+ pdata->buffer_size = 0x80;
+ } else {
+ pdata->dma_op_mode = -EINVAL;
+ pdata->buffer_size = 0;
+ }
-static int __init omap2_mcbsp_init(void)
+ sscanf(oh->name, "mcbsp%d",&id);
+ sprintf(dev_name, "mcbsp%d_sidetone", id);
+ oh_device[0] = oh;
+
+ for (i = 0; i< no_of_st ; i++) {
+ if (!strcmp(dev_name, oh_st_device[i]->name)) {
+ oh_device[1] = oh_st_device[i];
+ count++;
+ }
+ }
Pfuu, it took me a while to follow how all that stuff was working :-)
Since the sidetone block is tightly coupled to the mcbsp, you should
simply add this information directly as a attribute of the mcbsp2 & 3
hwmod dev_attr.
You will then easily detect which one does have a sidetone connected to
it and avoid all this code.
+static struct omap_mcbsp_dev_attr omap34xx_mcbsp2_dev_attr = {
+ .sidetone = "mcbsp2_sidetone",
+};
+static struct omap_hwmod omap34xx_mcbsp2_hwmod = {
...
+ .dev_attr = &omap34xx_mcbsp2_dev_attr,
...
Regards,
Benoit
+
+ od = omap_device_build_ss(name, id, oh_device, count, pdata,
+ sizeof(*pdata), omap2_mcbsp_latency,
+ ARRAY_SIZE(omap2_mcbsp_latency), false);
+ if (IS_ERR(od)) {
+ pr_err("%s: Cant build omap_device for %s:%s.\n", __func__,
+ name, oh->name);
+ kfree(pdata);
+ return PTR_ERR(od);
+ }
+ omap_mcbsp_count++;
+ return 0;
+}
+
+static int omap_mcbsp_st(struct omap_hwmod *oh, void *user)
{
- if (cpu_is_omap2420()) {
- omap_mcbsp_count = OMAP2420_MCBSP_PDATA_SZ;
- omap_mcbsp_cache_size = OMAP2420_MCBSP_REG_NUM * sizeof(u16);
- } else if (cpu_is_omap2430()) {
- omap_mcbsp_count = OMAP2430_MCBSP_PDATA_SZ;
- omap_mcbsp_cache_size = OMAP2430_MCBSP_REG_NUM * sizeof(u32);
- } else if (cpu_is_omap34xx()) {
- omap_mcbsp_count = OMAP34XX_MCBSP_PDATA_SZ;
- omap_mcbsp_cache_size = OMAP34XX_MCBSP_REG_NUM * sizeof(u32);
- } else if (cpu_is_omap44xx()) {
- omap_mcbsp_count = OMAP44XX_MCBSP_PDATA_SZ;
- omap_mcbsp_cache_size = OMAP44XX_MCBSP_REG_NUM * sizeof(u32);
+ if (!oh) {
+ pr_err("%s:NULL hwmod pointer (oh)\n", __func__);
+ return -EINVAL;
}
+ oh_st_device[no_of_st++] = oh;
+ return 0;
+}
+
+static int __init omap2_mcbsp_init(void)
+{
+ omap_hwmod_for_each_by_class("mcbsp_sidetone", omap_mcbsp_st,
+ NULL);
+ omap_hwmod_for_each_by_class("mcbsp", omap_init_mcbsp, NULL);
mcbsp_ptr = kzalloc(omap_mcbsp_count * sizeof(struct omap_mcbsp *),
GFP_KERNEL);
if (!mcbsp_ptr)
return -ENOMEM;
- if (cpu_is_omap2420())
- omap_mcbsp_register_board_cfg(omap2420_mcbsp_pdata,
- OMAP2420_MCBSP_PDATA_SZ);
- if (cpu_is_omap2430())
- omap_mcbsp_register_board_cfg(omap2430_mcbsp_pdata,
- OMAP2430_MCBSP_PDATA_SZ);
- if (cpu_is_omap34xx())
- omap_mcbsp_register_board_cfg(omap34xx_mcbsp_pdata,
- OMAP34XX_MCBSP_PDATA_SZ);
- if (cpu_is_omap44xx())
- omap_mcbsp_register_board_cfg(omap44xx_mcbsp_pdata,
- OMAP44XX_MCBSP_PDATA_SZ);
-
return omap_mcbsp_init();
}
arch_initcall(omap2_mcbsp_init);
diff --git a/arch/arm/plat-omap/include/plat/mcbsp.h b/arch/arm/plat-omap/include/plat/mcbsp.h
index 4da6f94..1ff283c 100644
--- a/arch/arm/plat-omap/include/plat/mcbsp.h
+++ b/arch/arm/plat-omap/include/plat/mcbsp.h
@@ -418,11 +418,9 @@ struct omap_mcbsp_platform_data {
u8 dma_rx_sync, dma_tx_sync;
u16 rx_irq, tx_irq;
struct omap_mcbsp_ops *ops;
-#ifdef CONFIG_ARCH_OMAP3
- /* Sidetone block for McBSP 2 and 3 */
unsigned long phys_base_st;
u16 buffer_size;
-#endif
+ int dma_op_mode;
};
struct omap_mcbsp_st_data {
@@ -466,12 +464,10 @@ struct omap_mcbsp {
struct omap_mcbsp_platform_data *pdata;
struct clk *iclk;
struct clk *fclk;
-#ifdef CONFIG_ARCH_OMAP3
struct omap_mcbsp_st_data *st_data;
int dma_op_mode;
u16 max_tx_thres;
u16 max_rx_thres;
-#endif
void *reg_cache;
};
extern struct omap_mcbsp **mcbsp_ptr;
diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index eac4b97..c7c6a83 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -27,6 +27,8 @@
#include<plat/dma.h>
#include<plat/mcbsp.h>
+#include<plat/omap_hwmod.h>
+#include<plat/omap_device.h>
#include "../mach-omap2/cm-regbits-34xx.h"
@@ -1466,7 +1468,6 @@ void omap_mcbsp_set_spi_mode(unsigned int id,
}
EXPORT_SYMBOL(omap_mcbsp_set_spi_mode);
-#ifdef CONFIG_ARCH_OMAP3
#define max_thres(m) (mcbsp->pdata->buffer_size)
#define valid_threshold(m, val) ((val)<= max_thres(m))
#define THRESHOLD_PROP_BUILDER(prop) \
@@ -1645,98 +1646,6 @@ static const struct attribute_group sidetone_attr_group = {
.attrs = (struct attribute **)sidetone_attrs,
};
-static int __devinit omap_st_add(struct omap_mcbsp *mcbsp)
-{
- struct omap_mcbsp_platform_data *pdata = mcbsp->pdata;
- struct omap_mcbsp_st_data *st_data;
- int err;
-
- st_data = kzalloc(sizeof(*mcbsp->st_data), GFP_KERNEL);
- if (!st_data) {
- err = -ENOMEM;
- goto err1;
- }
-
- st_data->io_base_st = ioremap(pdata->phys_base_st, SZ_4K);
- if (!st_data->io_base_st) {
- err = -ENOMEM;
- goto err2;
- }
-
- err = sysfs_create_group(&mcbsp->dev->kobj,&sidetone_attr_group);
- if (err)
- goto err3;
-
- mcbsp->st_data = st_data;
- return 0;
-
-err3:
- iounmap(st_data->io_base_st);
-err2:
- kfree(st_data);
-err1:
- return err;
-
-}
-
-static void __devexit omap_st_remove(struct omap_mcbsp *mcbsp)
-{
- struct omap_mcbsp_st_data *st_data = mcbsp->st_data;
-
- if (st_data) {
- sysfs_remove_group(&mcbsp->dev->kobj,&sidetone_attr_group);
- iounmap(st_data->io_base_st);
- kfree(st_data);
- }
-}
-
-static inline void __devinit omap34xx_device_init(struct omap_mcbsp *mcbsp)
-{
- mcbsp->dma_op_mode = MCBSP_DMA_MODE_ELEMENT;
- if (cpu_is_omap34xx()) {
- /*
- * Initially configure the maximum thresholds to a safe value.
- * The McBSP FIFO usage with these values should not go under
- * 16 locations.
- * If the whole FIFO without safety buffer is used, than there
- * is a possibility that the DMA will be not able to push the
- * new data on time, causing channel shifts in runtime.
- */
- mcbsp->max_tx_thres = max_thres(mcbsp) - 0x10;
- mcbsp->max_rx_thres = max_thres(mcbsp) - 0x10;
- /*
- * REVISIT: Set dmap_op_mode to THRESHOLD as default
- * for mcbsp2 instances.
- */
- if (omap_additional_add(mcbsp->dev))
- dev_warn(mcbsp->dev,
- "Unable to create additional controls\n");
-
- if (mcbsp->id == 2 || mcbsp->id == 3)
- if (omap_st_add(mcbsp))
- dev_warn(mcbsp->dev,
- "Unable to create sidetone controls\n");
-
- } else {
- mcbsp->max_tx_thres = -EINVAL;
- mcbsp->max_rx_thres = -EINVAL;
- }
-}
-
-static inline void __devexit omap34xx_device_exit(struct omap_mcbsp *mcbsp)
-{
- if (cpu_is_omap34xx()) {
- omap_additional_remove(mcbsp->dev);
-
- if (mcbsp->id == 2 || mcbsp->id == 3)
- omap_st_remove(mcbsp);
- }
-}
-#else
-static inline void __devinit omap34xx_device_init(struct omap_mcbsp *mcbsp) {}
-static inline void __devexit omap34xx_device_exit(struct omap_mcbsp *mcbsp) {}
-#endif /* CONFIG_ARCH_OMAP3 */
-
/*
* McBSP1 and McBSP3 are directly mapped on 1610 and 1510.
* 730 has only 2 McBSP, and both of them are MPU peripherals.
@@ -1746,6 +1655,7 @@ static int __devinit omap_mcbsp_probe(struct platform_device *pdev)
struct omap_mcbsp_platform_data *pdata = pdev->dev.platform_data;
struct omap_mcbsp *mcbsp;
int id = pdev->id - 1;
+ struct resource *res;
int ret = 0;
if (!pdata) {
@@ -1775,25 +1685,50 @@ static int __devinit omap_mcbsp_probe(struct platform_device *pdev)
mcbsp->dma_tx_lch = -1;
mcbsp->dma_rx_lch = -1;
- mcbsp->phys_base = pdata->phys_base;
- mcbsp->io_base = ioremap(pdata->phys_base, SZ_4K);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "%s:mcbsp%d has invalid memory resource\n",
+ __func__, pdev->id);
+ ret = -ENOMEM;
+ goto exit;
+ }
+ mcbsp->phys_base = res->start;
+ mcbsp->io_base = ioremap(res->start, resource_size(res));
if (!mcbsp->io_base) {
ret = -ENOMEM;
goto err_ioremap;
}
+ omap_mcbsp_cache_size = resource_size(res);
+
/* Default I/O is IRQ based */
mcbsp->io_type = OMAP_MCBSP_IRQ_IO;
- mcbsp->tx_irq = pdata->tx_irq;
- mcbsp->rx_irq = pdata->rx_irq;
- mcbsp->dma_rx_sync = pdata->dma_rx_sync;
- mcbsp->dma_tx_sync = pdata->dma_tx_sync;
+ mcbsp->tx_irq = platform_get_irq_byname(pdev, "tx");
+ mcbsp->rx_irq = platform_get_irq_byname(pdev, "rx");
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
+ if (!res) {
+ dev_err(&pdev->dev, "%s:mcbsp%d has invalid DMA channel\n",
+ __func__, pdev->id);
+ ret = -ENODEV;
+ goto err_res;
+ }
+ mcbsp->dma_rx_sync = res->start;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
+ if (!res) {
+ dev_err(&pdev->dev, "%s:mcbsp%d has invalid DMA channel\n",
+ __func__, pdev->id);
+ ret = -ENODEV;
+ goto err_res;
+ }
+ mcbsp->dma_tx_sync = res->start;
mcbsp->iclk = clk_get(&pdev->dev, "ick");
if (IS_ERR(mcbsp->iclk)) {
ret = PTR_ERR(mcbsp->iclk);
dev_err(&pdev->dev, "unable to get ick: %d\n", ret);
- goto err_iclk;
+ goto err_res;
}
mcbsp->fclk = clk_get(&pdev->dev, "fck");
@@ -1808,14 +1743,53 @@ static int __devinit omap_mcbsp_probe(struct platform_device *pdev)
mcbsp_ptr[id] = mcbsp;
platform_set_drvdata(pdev, mcbsp);
- /* Initialize mcbsp properties for OMAP34XX if needed / applicable */
- omap34xx_device_init(mcbsp);
+ omap_additional_add(mcbsp->dev);
+ if (pdata->dma_op_mode != -EINVAL) {
+ /*
+ * Initially configure the maximum thresholds to a safe value.
+ * The McBSP FIFO usage with these values should not go under
+ * 16 locations.
+ * If the whole FIFO without safety buffer is used, than there
+ * is a possibility that the DMA will be not able to push the
+ * new data on time, causing channel shifts in runtime.
+ */
+ mcbsp->max_tx_thres = max_thres(mcbsp) - 0x10 ;
+ mcbsp->max_rx_thres = max_thres(mcbsp) - 0x10 ;
+ }
+
+ if (cpu_is_omap34xx()) {
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (res) {
+ mcbsp->st_data = kzalloc(sizeof(*mcbsp->st_data),
+ GFP_KERNEL);
+ if (!mcbsp->st_data) {
+ ret = -ENOMEM;
+ goto err_st_data;
+ }
+ mcbsp->st_data->io_base_st = ioremap(res->start,
+ resource_size(res));
+ if (!mcbsp->st_data->io_base_st) {
+ ret = -ENOMEM;
+ goto err_io_st;
+ }
+ ret = sysfs_create_group(&mcbsp->dev->kobj,
+&sidetone_attr_group);
+ if (ret)
+ goto err_sysfs;
+ }
+ }
return 0;
+err_sysfs:
+ iounmap(mcbsp->st_data->io_base_st);
+err_io_st:
+ kfree(mcbsp->st_data);
+err_st_data:
+ clk_put(mcbsp->fclk);
err_fclk:
clk_put(mcbsp->iclk);
-err_iclk:
+err_res:
iounmap(mcbsp->io_base);
err_ioremap:
kfree(mcbsp);
@@ -1834,7 +1808,14 @@ static int __devexit omap_mcbsp_remove(struct platform_device *pdev)
mcbsp->pdata->ops->free)
mcbsp->pdata->ops->free(mcbsp->id);
- omap34xx_device_exit(mcbsp);
+ omap_additional_remove(mcbsp->dev);
+
+ if (mcbsp->st_data) {
+ sysfs_remove_group(&mcbsp->dev->kobj,
+&sidetone_attr_group);
+ iounmap(mcbsp->st_data->io_base_st);
+ kfree(mcbsp->st_data);
+ }
clk_disable(mcbsp->fclk);
clk_disable(mcbsp->iclk);
--
1.7.0.4
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